Servomotor Inspection - YASKAWA SGMJV User Manual

1.7.3 Servomotor Inspection

The AC servomotor is brushless and simple daily inspection is sufficient. Use the inspection frequencies given
in the following table as a guide. Determine the most appropriate inspection frequency from the actual usage
conditions and the environment.
Inspected Item
Vibration and
Noise Check
Appearance
Inspection
Insulation
Resistance Mea-
surement
Oil Seal
Replacement
Overhaul
∗
Measure the insulation resistance between the U, V, or W phase on the servomotor's power line and the frame ground.
Inspection Frequency Inspection or Maintenance
or Interval
Inspect by touching and listening
Daily
to the servomotor.
Depends on amount of Clean with a cloth or compressed
dirt. air.
Disconnect the servomotor from
the SERVOPACK and measure
the insulation resistance with a
At least once a year 500 V insulation resistance
meter.* The servomotor is normal
if the resistance is higher than 10
MΩ.
At least once every 5,000 Contact your Yaskawa represen-
hours tative.
At least once every 5 Contact your Yaskawa represen-
years or 20,000 hours tative.
1.7 Servo Drive Maintenance and Inspection
Procedure
There should be no more vibration
or noise than normal.
−
• If the resistance is 10 MΩ or
lower, contact your Yaskawa rep-
resentative.
• Do not measure the insulation
resistance of the encoder or per-
form a withstand test on it.
Only necessary if the servomotor
has an oil seal.
−
Remark
1
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